Should().ContainInOrder() - false negative?

Version: 5.3.0

Exception / failure message:

Xunit.Sdk.XunitException: Expected collection {(KnownRoleTypes, System.Collections.Generic.List`1[System.Type]), (HostResultRun, ), (test1, ), (test2, ), (test3, )} to contain items {(test1, ), (test2, ), (test3, )} in order, but (test1, ) (index 0) did not appear (in the right order).
   at FluentAssertions.Execution.XUnit2TestFramework.Throw(String message) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\XUnit2TestFramework.cs:line 32
   at FluentAssertions.Execution.AssertionScope.FailWith(String message, Object[] args) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Execution\AssertionScope.cs:line 225
   at FluentAssertions.Collections.CollectionAssertions`2.ContainInOrder(IEnumerable expected, String because, Object[] becauseArgs) in C:\projects\fluentassertions-vf06b\Src\FluentAssertions\Collections\CollectionAssertions.cs:line 631

Code:

results.Events.Should().ContainInOrder(
    new Tuple<string, object>("test1", null),
    new Tuple<string, object>("test2", null),
    new Tuple<string, object>("test3", null)
);

The exception seems to contradict itself - the collection does have those items?

[luiscantero]

I ran into a similar problem and found this issue. To repro in 6.1.0 do this:

var results = new List<object>
{
    new Tuple<object, object>("test1", null),
    new Tuple<object, object>("test2", null),
    new Tuple<object, object>("test3", null),
};

results.Should().ContainInOrder(
    new Tuple<string, object>("test1", null),
    new Tuple<string, object>("test2", null),
    new Tuple<string, object>("test3", null)
);

The error is:

FluentAssertions.Execution.AssertionFailedException: 'Expected results {(test1, ), (test2, ), (test3, )} to contain items {(test1, ), (test2, ), (test3, )} in order, but (test1, ) (index 0) did not appear (in the right order).'

[jnyrup]

Please provide a complete example. It makes it harder to debug, when one has to guess the type and content of result.events.